Just out of curiousity, and I know this is an old post, but has there been any discussion about this DAC's measured performance related to the design as it implements a volume control for the outputs where as the first version of the ZDAC does NOT implement a volume control. Inside layout of the units are somewhat different and I believe, as a result, the power supply distribution, filtering, etc. is not exactly the same for both units. Most reviews praising the ZDAC are actually of the first unit, not the V2. So I wonder if the changes made to the unit were actually negatively impacting the design. I understand there is a lockout feature of the volume to eliminate it, in theory, from the circuit. Were the measurements taken with the switch in lockout position? Was a V1 unit offered for review to compare? Just curious...not a tech guy, obviously, but actually interested as I had a paramount HCA 800mk2 amp for decades and had the volume controls taken out of the circuit, the improvement was dramatic to the sound. Obviously the amount of current/voltage running through those cheap carbon pots is not the same scenario as the ZDAC, but it never escaped me that an inexpensive attenuation solution is usually a bad idea. I would imagine the digital circuits are super sensitive to the surrounding electronics and when circuits change, the result could be measurable if not audible. The ZDAC has a certain ease and natural timbre to instruments (if not slightly thin and a little sloppy in the lower treble region when reproducing certain transients or musical complexity) that I thought was very accurate to the instruments they reproduced (trumpet, piano, upright bass). It does soundstaging well...but it makes me wonder how well similarly priced newer designs with better measurements actually perform and sound. Is a Schitt Modi or Topping DX7s or similar an eye opening experience? Is the idea of timbre and tone the last vestiges of an aging "audiophile guy" seeking the digital holy grail for 400 bucks?